Process for purifying glufosinate-ammonium by enzyme method

The invention relates to a process for purifying glufosinate-ammonium by an enzymic method, belongs to the technical field of biosynthesis and environment-friendly treatment, and particularly relates to the process for purifying glufosinate-ammonium by the enzymic method. The method specifically comprises the steps of amino dehydrogenation oxidation, cyano acidolysis, esterification reaction, low-temperature extraction, hydrolysis reaction, membrane separation, MVR (mechanical vapor recompression) evaporation salt taking and purification. According to the method, glufosinate-ammonium is purified, formation of byproduct salt ammonium chloride is reduced, high-toxicity and explosive raw materials are prevented from being used, and the purity of glyphosate is improved. 本发明的名称是一种酶法纯化草铵膦工艺，属于生物合成及环保处理技术领域，具体涉及酶法纯化草铵膦工艺。具体包括氨基脱氢氧化、氰基酸解、酯化反应、低温萃取、水解反应、膜分离及MVR蒸发取盐、纯化。本发明对草铵膦进行纯化，减少副产盐氯化铵的形成、避免使用高毒易爆的原材料，提高草甘膦纯度。